[Sync] Add ClearServerData support to Sync Scheduler

sync/engine/syncer.cc

Index: sync/engine/syncer.cc
diff --git a/sync/engine/syncer.cc b/sync/engine/syncer.cc
index 0b6bed27b0d5bbec52c5a27df28a68086276ce52..5eccd80161cbef286d02a5e7dd10cbb1a512eb5c 100644
--- a/sync/engine/syncer.cc
+++ b/sync/engine/syncer.cc
@@ -12,6 +12,7 @@
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "sync/engine/apply_control_data_updates.h"
+#include "sync/engine/clear_server_data.h"
 #include "sync/engine/commit.h"
 #include "sync/engine/commit_processor.h"
 #include "sync/engine/conflict_resolver.h"
@@ -222,4 +223,11 @@ bool Syncer::HandleCycleEnd(
   }
 }
 
+bool Syncer::PostClearServerData(SyncSession* session) {
+  DCHECK(session);
+  ClearServerData clear_server_data(session->context()->account_name());
+  const SyncerError post_result = clear_server_data.SendRequest(session);
+  return post_result == SYNCER_OK;
+}
+
 }  // namespace syncer